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[程序员] 请教关于 AES 算法中有关 T 函数的问题

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找了很多文章，在 AES 算法中 KeyExpansion 部分都提到了一个 T 函数 的命名

在实际算法中，T 函数又由字循环、字节代换和轮常量异或组成

那么 T 函数这个名字又是怎么得出的，在 NIST-FIPS-197-upd1 里面没有提到，求大佬解惑

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